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Thread: Efi Live File Formats

  1. #1
    Senior Member auspeed's Avatar
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    Default Efi Live File Formats

    HI, I can't find any posts that explains each of the file formats efi uses (*.tun, *.ctz etc...)and the intended purposes or uses for each format.

    Any tips would be great... thanks...

  2. #2
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    * .tun are OS/Cal files in EFILive's V7 file format. This has been the standard since EFILive V7 was released many years ago (I believe 2005, maybe 2004).
    * .ctz are OS/Cal files in EFILive's V8 file format. This has been the new standard since about 1.5 years ago, EFILive has decided on *.ctz as being the next file format. It is also the file format needed to use a FlashScan V2 to flash an OS and/or calibration via BBF (standalone flashing).

    Hope that helps, basically now I only use the *.ctz format because you have to do the editing in V7.5 anyway until the V8 tune tool is released. Makes life easier and I dont have to keep 2 copies of the same file (*.tun and *.ctz).
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  3. #3
    Joe (Moderator) joecar's Avatar
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    +1 use .ctz now.

  4. #4
    Senior Member auspeed's Avatar
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    thanks for replies...

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